Problem with integrated microphone in Acer 1810Z

[I am Gianluca]

Hello,
i have a laptop Acer 1810TZ, but the internal microphone doesn't work.
The BIOS is the last of Acer: v1.3310.
I use Fedora 13 64bit.
This is the link of the Alsa output:

# alsa-info --upload

here (http://www.alsa-project.org/db/?f=815da7f199e198264808d0342f5322e484d41710)

Thank you.

Ps. sorry for my bad english :(

[I am Gianluca]

Hi guys,
even with Fedora 14 64bit, Linux Kernel 2.6.35.10-74.fc14.x86_64 and Alsa version 1.0.23, I have the same problem. It looks like the internal microphone of my laptop isn't recognize.

Alsa report (http://www.alsa-project.org/db/?f=a3714cc292733666dfd8ff9f1d655c73746c1ae7)

Only the internal microphone has this problem, if I tried to connect an external microphone I could use it without any kind of problem.
Do you have some ideas?
Thank you very much,

Gianluca